libshout build undefined reference to SSL_is_init_finished - c++

Question

I'm currently trying to build a simple IceCast supplier using libshout.
Unfortunately, I am unable to resolve some linker errors:
Invoking: Cygwin C++ Linker
g++ -L"D:\Programme\Cygwin\usr\x86_64-w64-mingw32\sys-root\mingw\include\ogg" -L"D:\Programme\Cygwin\usr\x86_64-w64-mingw32\sys-root\mingw\include" -L"D:\Programme\Cygwin\usr\x86_64-w64-mingw32\sys-root\mingw\include\vorbis" -o "LibshoutJavaAdapter.exe" ./src/LibshoutJavaAdapter.o -lshout -lvorbis -logg -lssl -lcrypto
/usr/lib/gcc/x86_64-pc-cygwin/5.4.0/../../../../lib/libshout.a(tls.o): In function `tls_setup_process':
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:200: undefined reference to `SSL_is_init_finished'
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:200:(.text+0x74): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `SSL_is_init_finished'
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:203: undefined reference to `SSL_is_init_finished'
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:203:(.text+0x8f): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `SSL_is_init_finished'
/usr/lib/gcc/x86_64-pc-cygwin/5.4.0/../../../../lib/libshout.a(tls.o): In function `tls_setup':
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:66: undefined reference to `OPENSSL_init_ssl'
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:66:(.text+0x4ad): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `OPENSSL_init_ssl'
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:67: undefined reference to `OPENSSL_init_ssl'
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:67:(.text+0x4b9): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `OPENSSL_init_ssl'
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:68: undefined reference to `SSLeay_add_all_algorithms'
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:68:(.text+0x4be): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `SSLeay_add_all_algorithms'
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:69: undefined reference to `OPENSSL_init_ssl'
/cygdrive/d/Programme/utility/libshout-2.4.1/src/tls.c:69:(.text+0x4c7): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `OPENSSL_init_ssl'
collect2: error: ld returned 1 exit status
I'm using CygWin's GCC 64 bit version, butalso got a 32 version to compile with if needed.
The build is triggered using make
My actual code up to now is pretty basic (I'm only just getting started with this library)
#include <iostream>
#include <shout/shout.h>
int main() {
shout_init();
std::cout << "!!!Hello World!!!" << std::endl; // prints !!!Hello World!!!
return 0;
}
I use the following libraries for the linker in this Order(-l):
shout -> the actual library i try to use
vorbis
ogg
ssl
crypto
From the look of the error I suppose, that this is related to ssl somehow, but i did include those didn't I ?
I already tried rotating the order, but that only created more errors, so I suppose the order is correct ...
Edit 1:
As nnovich-OK suggested, I altered my code like this to check OpenSSL:
#include <iostream>
//#include <shout/shout.h>
#include <ctype.h>
#include <openssl/ssl.h>
int main() {
//shout_init();
OPENSSL_init();
OPENSSL_INIT_SETTINGS * test = NULL;
OPENSSL_init_ssl(0,test);
//SSL_is_init_finished();
std::cout << "!!!Hello World!!!" << std::endl; // prints !!!Hello World!!!
return 0;
}
There resulting Linking error looks like this:
g++ -L"D:\Programme\Cygwin\usr\x86_64-w64-mingw32\sys-root\mingw\include\ogg" -L"D:\Programme\Cygwin\usr\x86_64-w64-mingw32\sys-root\mingw\include" -L"D:\Programme\Cygwin\usr\x86_64-w64-mingw32\sys-root\mingw\include\vorbis" -o "LibshoutJavaAdapter.exe" ./src/LibshoutJavaAdapter.o -lshout -lvorbis -logg -lssl -lcrypto
./src/LibshoutJavaAdapter.o: In function `main':
/cygdrive/d/Install und andere Sachen/Eclipse/C++/LibshoutJavaAdapter/Debug/../src/LibshoutJavaAdapter.cpp:18: undefined reference to `OPENSSL_init_ssl'
/cygdrive/d/Install und andere Sachen/Eclipse/C++/LibshoutJavaAdapter/Debug/../src/LibshoutJavaAdapter.cpp:18:(.text+0x27): relocation truncated to fit: R_X86_64_PC32 against undefined symbol `OPENSSL_init_ssl'
collect2: error: ld returned 1 exit status
I see that there is a problem with OPENSSL_init_ssl from ssl.h but not with OPENSSL_init from crypto.h (witch intern is included by ssl.h)
Does that gives anyone any idea?
Any hints to resolving this Problem appreciated

Answer 1

I don't have the same setup to try, but provided info seems clear enough. Linker can't find functions from ssl library, so you need to focus on linking ssl. I think, issue scenario can be reduced to simple main function calling OPENSSL_init_ssl() (parameters doesn't matter, since you aren't going to execute it) and build process involving linking only openssl. Resolving this linking failure will help to resolve your current case. So let the Google and SO be with you :)
PS I'd rather put all this into comment, but SO newcomers aren't allowed to.
Edit:
Subsequent troubleshooting (check comments below) revealed actual root cause. System has several libssl instances (e.g. some app installation brought another version) and linker used instance not suitable for current build (e.g. 32bit version in building 64bit app). So the solution was to put linker into verbose mode and to check whether library paths are as expected.